CN117954851A - Feed structure and antenna - Google Patents

Abstract

The present disclosure relates to a feed structure and an antenna, the feed structure comprising: a feeding sheet; one end of the feed sheet is electrically connected with the radiating unit of the antenna, and the other end of the feed sheet forms a bending part; the bending part is used for being connected with an output port of a feed network of the antenna. The antenna has the advantages that the feeding sheet is used for connecting the radiating unit with the feeding network, the use of coaxial cables is reduced, the overall performance of the antenna can be effectively improved, the dead weight of the antenna is lightened, and meanwhile, the preparation cost and the process difficulty of the antenna are reduced.

Description

Feed structure and antenna

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to a feeding structure and an antenna.

Background

In antenna design, various microwave devices are key devices, such as various devices including a radiating element, a phase shifter, a power divider, a combiner, a filter, a bridge and the like, and have great influence on the performance of the antenna. Currently, in a base station antenna, each microwave device is generally present as a separate module, and when combined into the base station antenna, the modules are typically connected by a microwave coaxial cable. Each module can be independently designed, and can be independently optimized to improve the antenna performance, and the universality of each module is stronger.

However, the modules are connected by coaxial cables, and the connection method also has a plurality of defects. First, the coaxial cable itself has electrical loss, and the loss increases with increasing frequency, and after the coaxial cable is added, the problem of increased insertion loss is brought, thereby resulting in reduced gain of the antenna. Second, coaxial cables also have machining errors that can lead to poor antenna uniformity. Thirdly, the weight of the coaxial cable is large, and the dead weight of the antenna can be increased by greatly increasing the weight of the coaxial cable, so that the load of the base station is improved. Fourth, the modules are connected by welding the coaxial cable, the production cost is increased by adding welding spots, the coaxial cable has material cost, and meanwhile, the coaxial cable is difficult to be connected in the antenna, and some technical problems are introduced. Therefore, how to reduce the use of coaxial cables in antennas is a current challenge.

Disclosure of Invention

In order to solve the above technical problems or at least partially solve the above technical problems, the present disclosure provides a feeding structure and an antenna.

The present disclosure provides a feed structure comprising:

a feeding sheet; one end of the feed sheet is electrically connected with the radiating unit of the antenna, and the other end of the feed sheet forms a bending part; the bending part is used for being connected with an output port of a feed network of the antenna.

In some embodiments, the feeding medium is located at the bending part, so that the bending part is coupled and connected with the feeding network output port through the feeding medium.

In some embodiments, the feed medium is provided with a receiving slot for placing and securing the feed network output port of the antenna.

In some embodiments, the feed tab includes an extension portion and a torsion portion, the bending portion being connected to the extension portion by the torsion portion; the extension part is electrically connected with the radiation unit; the torsion portion is twisted 45 degrees with respect to the extension portion.

In some embodiments, the bending portion is in a U shape, and a receiving groove of the U-shaped bending portion is used for connecting with an output port of a feed network of the antenna.

In some embodiments, the feed tab is coated with a first insulating medium.

In a second aspect, the present disclosure also provides an antenna comprising a radiating element, a feed network and a feed structure as provided in any one of the first aspects.

In some embodiments, the feed tab is integrally formed with the balun structure of the radiating element.

In some embodiments, the device further comprises a cavity and a reflective plate; the radiation unit is positioned on the first side of the reflecting plate; the cavity is positioned on the second side of the reflecting plate; the first side is opposite the second side; the feed network is positioned in the cavity; the side wall of the reflecting plate and the side wall of the cavity, which faces the reflecting plate, are provided with first holes, the feed piece passes through the first holes, and the bending part is positioned in the cavity.

In some embodiments, the cavity extends toward the side wall of the reflective plate in a direction parallel to the reflective plate to form a connection portion; the connecting part is fixed with the reflecting plate; the cavity faces to the side wall of the reflecting plate and a second insulating medium is arranged between the reflecting plate and the side wall of the cavity, and the connecting part is coupled with the reflecting plate to be grounded.

In some embodiments, the cavity is provided with a second opening at a connection between the bending portion and the feed network output port of the antenna.

In some embodiments, the feed network comprises a phase shifter; the feed network output port comprises a phase shifter output port; the phase shifter comprises a strip line, a phase shifting medium and a transmission mechanism; the transmission mechanism is used for driving the phase shifting medium to move relative to the belt line.

Compared with the prior art, the technical scheme provided by the disclosure has the following advantages:

The feed structure provided by the present disclosure includes a feed tab; one end of the feed sheet is electrically connected with the radiating unit of the antenna, and the other end of the feed sheet forms a bending part; the bending part is used for being connected with the feed network output port of the antenna. In antenna structure, feed network needs to feed in the radiating element with the incoming signal, compares with prior art, and this disclosure utilizes the feed piece to form the one end of portion of bending and connects the feed network, and the radiating element is connected to the other end of feed piece to reach the purpose of feeding to the radiating element through the feed network, need not to insert the coaxial cable between feed network and radiating element, reduced the use of coaxial cable, can effectively improve antenna wholeness ability, lighten the antenna dead weight, reduce the cost of manufacture and the technology degree of difficulty of antenna simultaneously.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.

In order to more clearly illustrate the embodiments of the present disclosure or the solutions in the prior art, the drawings that are required for the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.

Fig. 1 is a schematic structural diagram of a feeding structure according to an embodiment of the present disclosure;

FIG. 2 is a schematic side view of a connection at a feed structure provided in an embodiment of the present disclosure;

fig. 3 is a schematic front view of a connection at a feeding structure according to an embodiment of the present disclosure;

fig. 4 is a schematic diagram of an antenna structure according to an embodiment of the disclosure;

fig. 5 is a schematic structural diagram of a cavity according to an embodiment of the disclosure.

Wherein, 1, the feed structure 1; 2. a radiation unit; 3. a feed network; 4. a cavity; 5. a reflection plate; 10. a feeding sheet; 101. a bending part; 102. a feed medium; 103. an extension; 104. a torsion part; 105. a receiving groove; 301. a feed network output port; 302. a feed network output port; 310. a phase shifter; 311. a belt line; 312. a phase shifting medium; 401. a first opening; 402. a connection part; 403. a second insulating medium; 404. a second opening; 405. and a third opening.

Detailed Description

In order that the above objects, features and advantages of the present disclosure may be more clearly understood, a further description of aspects of the present disclosure will be provided below. It should be noted that, without conflict, the embodiments of the present disclosure and features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced otherwise than as described herein; it will be apparent that the embodiments in the specification are only some, but not all, embodiments of the disclosure.

Since each microwave device in the antenna exists as a separate module, the modules are connected by a coaxial cable to form the antenna, but the connection mode also brings a plurality of defects, thereby affecting the performance of the antenna. For example, the coaxial cable itself has an electrical loss, and the loss increases with an increase in frequency, and when the coaxial cable is added, there is a problem that the insertion loss increases, resulting in a decrease in gain of the antenna. Coaxial cables also have machining errors that can lead to poor antenna consistency. The weight of the coaxial cable is large, and the dead weight of the antenna can be increased by greatly increasing the weight of the coaxial cable, so that the load of the base station is improved. The microwave modules are connected through the coaxial cable, the production cost can be increased by adding welding spots, the coaxial cable has material cost, and meanwhile, the coaxial cable is difficult to be connected in the antenna, and some technical problems can be introduced.

In view of the foregoing drawbacks of the prior art, embodiments of the present disclosure provide a feed structure. The feeding structure provided by the embodiment of the disclosure can be applied to an antenna, and the embodiment of the disclosure does not limit the type of the antenna.

The feeding structure and the antenna provided by the embodiments of the present disclosure are exemplarily described below with reference to the accompanying drawings.

Exemplary, fig. 1 is a schematic structural diagram of a feeding structure provided by an embodiment of the present disclosure, fig. 2 is a schematic structural diagram of a side view of a connection at a feeding structure provided by an embodiment of the present disclosure, fig. 3 is a schematic structural diagram of a front view of a connection at a feeding structure provided by an embodiment of the present disclosure, and two feeding structures 1 and their corresponding connected radiation units 2 and feeding networks 3 are shown in fig. 1 to 3, fig. 2 and 3. The feed structure 1 comprises: a feeding sheet 10; one end of the feed tab 10 is electrically connected to the radiation unit 2 of the antenna, and the other end of the feed tab 10 forms a bent portion 101; the bending part 101 is used for being connected with a feed network output port 301 of the antenna.

The antenna comprises a feed structure 1, the feed structure 1 is used for connecting a radiation unit 2 of the antenna and a feed network 3 of the antenna, the feed network 3 feeds the radiation unit 2 through the feed structure, and the radiation unit 2 radiates corresponding electromagnetic waves outwards after receiving an input signal fed by the feed network 3. The feeding structure 1 includes a feeding sheet 10, the feeding sheet 10 is made of conductive material, and the radiating unit 2 and the feeding network 3 are connected through the feeding sheet 10. For example, one end of the feeding sheet 10 is electrically connected with the radiating unit 2 of the antenna, the other end of the feeding sheet 10 forms a bending part 101, and the feeding network output port 301 of the feeding network 3 of the antenna is connected with the bending part 101, so that the feeding sheet 10 can be better connected with the feeding network output port 301 by the structural arrangement of the bending part 101.

The feeding network 3 transmits an input signal to the feeding sheet 10 of the feeding structure 1 through the feeding network output port 301, and one end of the feeding sheet 10 is also electrically connected with the radiating element 2 of the antenna, so that the feeding sheet 10 can feed the radiating element 2 to complete the transmission of the input signal. The radiating unit 2 and the feed network output port 301 do not need to be connected through the coaxial cable, so that the use of the coaxial cable is reduced, the loss caused by the coaxial cable is reduced, the gain of the antenna can be improved, the feed structure is small in size and light in weight, the influence on the weight of the antenna is small, welding spots are reduced, and the occurrence frequency of process problems is reduced.

The feeding structure provided by the embodiment of the disclosure is provided with the feeding sheet, one end of the bending part formed by the feeding sheet is connected with the feeding network, and the other end of the feeding sheet is connected with the radiating unit, so that the purpose of feeding the feeding to the radiating unit through the feeding network is achieved, a coaxial cable is not required to be connected between the feeding network and the radiating unit, the use of the coaxial cable is reduced, the overall performance of the antenna can be effectively improved, the dead weight of the antenna is reduced, and the preparation cost and the technological difficulty of the antenna are reduced.

In some embodiments, with continued reference to fig. 1-3, the feed structure 1 further comprises a feed medium 102, the feed medium 102 being located at the bend 101, such that the bend 101 is coupled to the feed network output port 301 through the feed medium 102.

The feeding medium 102 is located at the bending part 101, the feeding medium 102 is made of insulating material, and the bending part 101 of the feeding sheet 10 is isolated from direct contact with the feeding network output port 301 by the feeding medium 102, so that a gap exists between the bending part 101 and the feeding network output port 301, and the bending part 101 is coupled and connected with the feeding network output port 301 through the feeding medium 102. By adopting the connection mode, the use of the coaxial cable can be reduced, the loss caused by the coaxial cable can be reduced, the gain of the antenna can be improved, and the weight of the antenna can be reduced. In addition, the bending part 101 of the feeding sheet 10 is insulated from the feeding network output port 301 by the feeding medium 102 and is coupled, so that intermodulation problem can be avoided, interference signals generated at the joint during welding are avoided, the antenna system is influenced, and signal distortion is caused.

In some alternative embodiments, the feeding sheet may be electrically connected to the feeding network output port, and the feeding sheet is connected to the feeding network output port by welding, so that a coaxial cable is not required, the use of the cable is reduced, and a series of problems caused by the cable are improved.

In some embodiments, with continued reference to fig. 1-3, the feed medium 102 is provided with a receiving slot 105, the receiving slot 105 being used to place and secure the feed network output port 301 of the antenna.

The feeding medium 102 is located at the bending portion 101, the feeding medium 102 is provided with a receiving groove 105, and as shown in fig. 1, the receiving groove 105 is disposed between the feeding mediums 102, so that the feeding medium 102 is located at both sides of the receiving groove 105, and the feeding network output port 301 is fixed in the receiving groove 105. Besides enabling the feeding sheet 10 to be coupled with the feeding network output port 301, the feeding medium 102 can also play a role of fixing the feeding network output port 301, the feeding network output port 301 is placed and fixed in the accommodating groove 105, the feeding medium 102 can clamp the feeding network output port 301 better, strength of a coupling position is enhanced, deformation of the coupling position is reduced, and loosening is avoided. And the coupling gap between the feeding sheet 10 and the feeding network output port 301 can be controlled by adjusting the size of the accommodating groove 105, so that the distances between the coupling positions are the same, the coupling degree is consistent, and the stability of the antenna is improved. Therefore, the stability and consistency of the antenna are also improved to some extent.

In some embodiments, referring to fig. 1-3, the feeding tab 10 includes an extension 103 and a torsion 104, the bending 101 being connected to the extension 103 by the torsion 104; the extension 103 is electrically connected with the radiation unit 2; torsion portion 104 is twisted 45 degrees relative to extension 103.

Taking a dual polarized antenna as an example, due to the antenna structure, the vibrators of the radiating unit 2 of the antenna are orthogonally crossed, and two pairs of antennas with +45 DEG and-45 DEG polarization directions being mutually orthogonal are combined. The radiation unit 2 is electrically connected to the extension 103 of the feeding sheet 10, and the feeding sheet 10 can only feed power to the radiation unit 2, and the extension 103 of the feeding sheet 10 cannot directly overlap with the feeding network output port 301 during the assembly process due to the connection relationship between the feeding sheet and the radiation unit 2 and the influence of the radiation unit 2. Therefore, the feeding sheet 10 of the embodiment of the present disclosure further includes a torsion portion 104, one end of the torsion portion 104 is connected to the extension portion 103, and the other end is connected to the bending portion 101, and the torsion portion 104 is twisted 45 degrees with respect to the extension portion 103, so as to overcome the problem that the bending portion 101 of the feeding sheet 10 cannot overlap with the feeding network output port 301. After the torsion part 103 is twisted by 45 degrees, the bending part 101 is flush with the feed network output port 301, and the feed network output port 301 can be lapped on the bending part 101, so that the radiating unit 2 of the antenna is connected with the feed network 3 of the antenna through the feed sheet 10, the purpose of coupling feeding is achieved, the coaxial cable is not needed to be used for connection, the loss caused by the coaxial cable is avoided, the gain of the antenna is influenced, and a series of problems of poor antenna consistency, large weight and the like are caused.

In some embodiments, referring to fig. 1 to 3, the bending portion 101 is U-shaped, and the accommodating groove 105 of the U-shaped bending portion 101 is used to connect with the feeding network output port 301 of the antenna.

Illustratively, in the embodiment of the present disclosure, the bending portion 101 of the feeding sheet 10 adopts a U-shaped design, that is, the end of the bending portion 101 is completely upward to form a U-shaped slot, the feeding network output port 301 is disposed in the U-shaped bending portion 101 and is fixed in the middle of the U-shaped bending portion 101, the coupling area between the feeding network output port 301 and the U-shaped bending portion 101 is increased, and the coupling strength is also increased. The U-shaped bending part 101 is internally provided with the accommodating groove 105, the feed network output port 301 is placed and fixed in the accommodating groove 105, the accommodating groove 105 can better clamp the feed network output port 301, the strength of the coupling position is enhanced, the deformation of the coupling position is reduced, the loosening condition is avoided, and therefore the stability and the consistency of the antenna are improved to a certain extent.

In some embodiments, the feed tab is coated with a first insulating medium.

For example, referring to fig. 2 and 3, one end of the feeding tab 10 is connected to the radiating element 2, and the other end is connected to the feeding network output port 301, and the feeding tab 10 needs to pass through some other device to implement the above-mentioned connection structure, for example, the cavity 4 in fig. 3, and the feeding network 3 is disposed in the cavity 4, and if the feeding tab 10 needs to be connected to the feeding network output port 301, then the feeding tab 10 needs to pass through the cavity 4. In order to avoid the feeding sheet 10 from contacting with other devices and interfering with the antenna performance, the feeding sheet 10 may be coated with a first insulating medium, and when the feeding sheet 10 passes through the cavity 4, the feeding sheet 10 may be kept insulated from the cavity 4, and the feeding sheet 10 and the cavity may not be directly contacted. In some other embodiments, the feeding sheet may also have contact with other devices, and by coating the first insulating medium outside the feeding sheet, unnecessary interference generated by contact can be isolated, so as to ensure the stability of the antenna.

It should be noted that, in the embodiments of the present disclosure, the material and the coating position of the first insulating medium are not limited, and the embodiments described above are merely illustrative according to the actual configuration.

The disclosed embodiments also provide an antenna comprising a feed structure as described in any of the embodiments above. The present invention has the same or similar advantageous effects as the feeding structure in the above-described embodiments, since it includes the feeding structure in the above-described embodiments. It should be noted that, the antenna provided in the embodiment of the present invention may further include other circuits, devices or systems for supporting the normal operation of the antenna, which is not limited in this embodiment.

With continued reference to fig. 1-3, in some embodiments the feed tab 10 of the feed structure 1 is integrally formed with the balun structure of the radiating element 2.

The radiating element 2 of the antenna comprises a vibrator and a balun structure, the vibrator being connected to the balun structure, and the balun structure being connected to the feed network 3 via a feed tab 10. The feed network 3 feeds an input signal into the balun structure through the feed sheet 10, the balun structure transmits the input signal to the vibrator, and electromagnetic waves are radiated outwards by the vibrator, so that a radiation function is realized. The feeding sheet 10 and the balun structure of the radiating unit 2 in the embodiment of the disclosure are integrally formed, connection between the feeding sheet 10 and the balun structure is not needed, gaps and breaks are avoided, the stability of the structure is better, and interference is reduced. The integrally formed balun structure and the feeding sheet 10 penetrate through the cavity 4 and are connected with the feeding network output port 301 in the cavity 4 in a coupling mode, assembly is simple, the feeding sheet 10 and the balun structure are not required to be connected, assembly difficulty can be reduced, and system stability can be improved.

In some other embodiments, the feeding sheet of the feeding structure and the balun structure of the radiating element may be separately prepared, and combined and connected in a subsequent assembly process, which is not limited in this embodiment of the disclosure, and may be selected according to actual requirements.

In some embodiments, fig. 4 is a schematic structural diagram of an antenna provided in an embodiment of the disclosure, and on the basis of fig. 3, with reference to fig. 4, the antenna further includes a cavity 4 and a reflecting plate 5; the radiation unit 2 is located at a first side of the reflection plate 5; the cavity 4 is positioned on the second side of the reflecting plate 5; the first side is opposite to the second side; the feed network 3 is positioned in the cavity 4; the reflecting plate 5 and the side wall of the cavity 4 facing the reflecting plate 5 are provided with a first opening 401, the feeding sheet 10 passes through the first opening 401, and the bending part 101 is positioned in the cavity 4.

The cavity 4 in the antenna plays a role in packaging protection, and is electrically grounded, and the function of transmitting current is realized by the combined action of the cavity 4 and a circuit. The reflecting plate 5 in the antenna may control the radiation at a certain side of the reflecting plate 5 and enhance or suppress the radiation by reflection. The reflection plate 5 may be an aluminum plate, a galvanized steel plate, or the like. Illustratively, the reflector plate 5 comprises opposite first and second sides, the radiating element 2 being located on the first side of the reflector plate 5, e.g. the radiating element 2 being fixed on the first side of the reflector plate 5, the cavity 4 being located on the second side of the reflector plate 5, the feed network 3 being located within the cavity 4, and correspondingly the feed network output port 301 being also located within the cavity 4. The side walls of the reflecting plate 5 and the cavity 4 are arranged between the radiating unit 2 and the feeding network 3, and if the feeding sheet 10 is to be connected with the radiating unit 2 and the feeding network output port 301 respectively, the feeding sheet 10 needs to pass through the reflecting plate 5 and the cavity 4 to reach the position of the feeding network output port 301. Therefore, the first opening 401 needs to be provided on the reflective plate 5 and the side wall of the cavity 4 facing the reflective plate 5, so that after the feeding sheet 10 passes through the first opening 401, the bending portion 101 of the feeding sheet 10 is located in the cavity 4 and is located in the same space as the feeding network output port 301, and the bending portion 101 can be connected with the feeding network output port 301 without providing a coaxial cable, and further, the feeding network 3 can feed electricity to the radiation unit 2 through the feeding sheet 10. As illustrated in fig. 3, two feeding tabs 10 and two cavities 4 are provided, each feeding tab 10 being located in a separate cavity 4, the bent portion 101 of each feeding tab 10 being coupled to its corresponding feeding network output port 301. It should be noted that, in the embodiment of the present disclosure, the number of the feeding sheets and the number of the cavities are not limited, and the feeding sheets may be set according to actual requirements, but each cavity corresponds to only one feeding sheet.

Because the coaxial cable is not used for connecting the radiating unit and the feed network, the consumption of the coaxial cable in the antenna is reduced, the electrical loss existing in the coaxial cable is correspondingly reduced, the gain reduction of the antenna is avoided, the consistency of the antenna is improved, and the weight of the antenna is reduced.

In some embodiments, with continued reference to fig. 3, the cavity 4 extends toward the side wall of the reflective plate 5 in a direction parallel to the reflective plate 5 to form a connection 402; the connection part 402 is fixed to the reflection plate 5; a second insulating medium 403 is arranged between the side wall of the cavity 4 facing the reflecting plate 5 and the reflecting plate 5, and the connecting part 402 is coupled with the reflecting plate 5 to be grounded.

The side wall of the cavity 4 facing the reflecting plate 5 extends along the direction parallel to the reflecting plate 5 and forms a connecting part 402, and as can be seen from fig. 3, the connecting part 402 is fixed to the reflecting plate 5 and is in parallel relation, so as to achieve the purpose of connecting the cavity 4 with the reflecting plate 5. If the cavity 4 is electrically connected to the reflecting plate 5 and grounded, for example, in the prior art, the surface of the cavity 4 is electroplated, and the outer conductor of the coaxial cable is welded to the outer surface of the cavity 4 to realize electrical connection, the connection mode easily generates intermodulation problem, which results in interference signals, affects the antenna performance, and the overall electroplating is required to be performed on the surface of the cavity 4, so that the operation cost is high. And the thickness of the second insulating medium 403 may be selected according to practical requirements, so as to control the coupling gap between the connecting portion 402 of the cavity 4 and the reflecting plate 5, and indicate the stability of coupling.

Therefore, in the embodiment of the disclosure, the second insulating medium 403 is further disposed between the side wall of the cavity 4 facing the reflecting plate 5 and the reflecting plate 5, and the cavity 4 is prevented from being in direct contact with the reflecting plate 5 by the second insulating medium 403, so that the connecting portion 402 is grounded in a coupling manner with the reflecting plate 5, intermodulation problems caused by electrical connection are avoided, and electroplating is not required on the surface and the inner strip line of the cavity 4, so that the manufacturing cost of the antenna can be reduced.

In some other embodiments, the side wall of the cavity facing the reflecting plate may be parallel to the reflecting plate without a connecting portion; the side wall (corresponding to the upper surface) of the cavity is coupled with the reflecting plate, and a second insulating medium is arranged between the reflecting plate and the upper surface of the cavity, so that electroplating is not needed, and intermodulation problem can be avoided.

In some embodiments, fig. 5 is a schematic structural diagram in a cavity provided in the embodiments of the present disclosure, a structure corresponding to fig. 5 may be obtained by removing the cavity 4 in fig. 4, and referring to fig. 3 to fig. 5, the cavity 4 is provided with a second opening 404 at a connection position between the bending portion 101 and the feed network output port 301 of the antenna.

Illustratively, the feeding network 3 of the antenna is disposed in the cavity 4, and the feeding network output port 301 and the bending portion 101 of the feeding sheet 10 are located in the cavity 4 and are coupled. In order to facilitate the observation and inspection of the coupling position and the coupling state between the bending portion 101 and the feed network output port 301, a second opening 404 is provided on the cavity 4, the second opening 404 corresponds to the coupling position between the bending portion 101 and the feed network output port 301, and the position of the second opening 404 can be illustrated in fig. 4, but the position of the second opening 404 in fig. 4 does not show the coupling position between the bending portion 101 and the feed network output port 301 in the cavity 4, and the positions and structures of the specific bending portion 101 and the feed network output port 301 can be illustrated in fig. 5. Therefore, the coupling condition of the bending portion 101 and the feeding network output port 301 can be observed through the second opening 404 without opening the cavity 4, and the coupling feeding position of the bending portion and the feeding network output port 301 can be adjusted. Illustratively, 6 second openings 404 are provided in fig. 4 and 5, corresponding to the coupling points of the 6 bent portions 101 inside the cavity and the feed network output port 301, respectively. According to the embodiment of the disclosure, the second opening is formed, so that an operator can conveniently detect and adjust the coupling position of the feed piece and the feed network, and the whole cavity is not required to be opened, so that the adjustment can be performed according to actual requirements.

In some embodiments, with continued reference to fig. 3-5, disposed within the cavity is a feed network 3, the feed network 3 including a phase shifter 310; the feed network output port 301 includes a phase shifter output port; the phase shifter 310 includes a strip line 311, a phase shifting medium 312, and a transmission mechanism; the transmission mechanism is used for driving the phase shifting medium 312 to move relative to the strip line 311.

The feed network 3 is used to feed the radiating elements so that the radiating elements perform the corresponding radiating operations under the control of the input signals. Illustratively, the feed network 3 comprises a phase shifter 310, and accordingly the feed network output port 301 comprises a phase shifter output port, which is coupled to the bent portion of the feed tab 10, thereby enabling a coupled feed between the feed network 3 and the radiating element. The phase shifter 310 is a key device capable of realizing phase regulation, and by changing the phase difference of each antenna unit in the antenna array, functions such as beam forming, signal enhancement, reverse suppression, multi-beam communication and the like are realized. The direction of the maximum value of the antenna pattern can be changed by controlling the phase, for example, by controlling the feeding phase of the radiating element in the antenna, so as to achieve the purpose of beam scanning. Illustratively, the phase shifter 310 includes a strip line 311, a phase shifting medium 312, and a transmission mechanism, where the strip line 311 may be a metal strip line, such as a sheet metal strip line, or may be in the form of a PCB (Printed Circuit Board ) strip line for transmitting signals to the radiating element. The strip line 311 is located between two groups of phase shifting media 312, and the phase shifting media 312 is driven by a transmission mechanism to move relative to the strip line 311, and can also be understood as moving along the length direction of the cavity, so that the area of the fixed strip line 311 covered by the phase shifting media 312 on the signal transmission path is changed, the transmission speed of the signal is changed, and phase shifting is realized.

In some alternative embodiments, referring to fig. 4 and 5, the cavity 4 further includes a feed network input port 302 therein, the feed network input port 302 including a phase shifter input port; the input port of the phase shifter is electrically connected with the main feeder line, receives an input signal transmitted by the main feeder line, and transmits the signal to the radiating unit through the feed network and the feed sheet. In order to facilitate the observation and inspection of the connection position and state of the input port of the phase shifter and the main feeder line, a third opening 405 is provided on the cavity 4, and the third opening 405 corresponds to the connection position of the input port of the phase shifter and the main feeder line, for example, see the third opening 405 in fig. 4, but fig. 4 does not show the input port of the phase shifter and the main feeder line, and the position and structure of the input port of the phase shifter can refer to fig. 5. Therefore, the connection condition of the input port of the phase shifter and the main feeder line can be observed through the third opening 405 without opening the cavity 4, and adjustment can be performed.

It should be noted that, in some other implementations, other types of phase shifters may be included in the dielectric-shift phase shifter according to the embodiments of the present disclosure, for example, a network-slide phase shifter, where the phase shift is implemented by moving a metal conductor to change a physical length of a transmission line, which is not limited by the embodiments of the present disclosure, and the above embodiments are merely examples.

It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The foregoing is merely a specific embodiment of the disclosure to enable one skilled in the art to understand or practice the disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown and described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (12)

1.A feed structure, comprising:

a feeding sheet; one end of the feed sheet is electrically connected with the radiating unit of the antenna, and the other end of the feed sheet forms a bending part; the bending part is used for being connected with an output port of a feed network of the antenna.

2. The feed structure of claim 1, further comprising a feed medium located at the bend such that the bend is coupled to the feed network output port through the feed medium.

3. The feed structure according to claim 2, characterized in that the feed medium is provided with a receiving slot for placing and fixing the feed network output port of the antenna.

4. The feed structure according to claim 1, wherein the feed tab includes an extension portion and a torsion portion, the bending portion being connected to the extension portion through the torsion portion; the extension part is electrically connected with the radiation unit; the torsion portion is twisted 45 degrees with respect to the extension portion.

5. The feeding structure of claim 1, wherein the bending portion is U-shaped, and a receiving groove of the U-shaped bending portion is used for connecting with an output port of a feeding network of the antenna.

6. The feed structure of claim 1, wherein the feed tab is coated with a first insulating medium.

7. An antenna comprising a radiating element, a feed network, and a feed structure as claimed in any one of claims 1 to 6.

8. The antenna of claim 7, wherein the feed tab is integrally formed with the balun structure of the radiating element.

9. The antenna of claim 7, further comprising a cavity and a reflector plate; the radiation unit is positioned on the first side of the reflecting plate; the cavity is positioned on the second side of the reflecting plate; the first side is opposite the second side; the feed network is positioned in the cavity; the side wall of the reflecting plate and the side wall of the cavity, which faces the reflecting plate, are provided with first holes, the feed piece passes through the first holes, and the bending part is positioned in the cavity.

10. The antenna of claim 9, wherein the cavity extends toward the side wall of the reflector plate in a direction parallel to the reflector plate to form a connection; the connecting part is fixed with the reflecting plate; the cavity faces to the side wall of the reflecting plate and a second insulating medium is arranged between the reflecting plate and the side wall of the cavity, and the connecting part is coupled with the reflecting plate to be grounded.

11. The antenna of claim 9, wherein the cavity is provided with a second aperture at a junction of the bend and a feed network output port of the antenna.

12. The antenna of claim 9, wherein the feed network comprises a phase shifter; the feed network output port comprises a phase shifter output port; the phase shifter comprises a strip line, a phase shifting medium and a transmission mechanism; the transmission mechanism is used for driving the phase shifting medium to move relative to the belt line.